General Geologic Map Lake Superior
By Geology, Geophysics, and Geochemistry Science Center
April 2019 (approx.)
Detailed Description
Generalized geologic map of the Midcontinent Rift, Lake Superior region, showing sedimentary, volcanic, and intrusive rocks and major and minor faults. The location of the Copperwood and White Pine mineral deposits are shown.
Sources/Usage
Public Domain.